The site occupies an elevated position that has been levelled over time, leaving behind the ghostly outline of what was once a substantial structure. When surveyors first mapped this area for the Ordnance Survey’s six-inch map in 1841, they recorded an L-shaped building with its long axis running east to west, capturing one of the last glimpses of the castle’s original footprint before it fell further into ruin.

The castle’s strategic placement on high ground would have offered its inhabitants commanding views of the surrounding countryside, a common defensive feature of medieval fortifications in Ireland. While the exact date of its construction remains uncertain, the architectural layout suggested by the 1841 survey indicates a tower house or fortified residence typical of the late medieval period, when such structures dotted the Irish landscape as symbols of local power and control.

Archaeological records for the site have been carefully maintained and updated since the publication of the Archaeological Inventory of County Laois in 1995, compiled by P. David Sweetman, Olive Alcock, and Bernie Moran. Their work, along with subsequent research, helps preserve the memory of places like Roskeen Castle, ensuring that even as the physical remains continue to deteriorate, the historical significance of these sites remains documented for future generations to study and appreciate.